Features 1.HIGH DEFINITION STEREO SOUND: Bluetooth speaker is equipped with dual 5W speakers, dual diaphragms and signal processor to ensure clear stereo sound, support two speakers in bluetooth mode synchronized wireless connection 4 speakers and 4 diaphragms. 2.POWERFUL BASS: Waterproof bluetooth speaker adopts 1.69 inch driver and symmetrical magnetic circuit with bi wire coil and unique bass enhancement technology, reproduces dynamic sound with low distortion, and the sound is more vivid and detailed when 2 speakers are paired. 3.IPX5 WATERPROOF SPEAKERS: The wireless portable speakers are rugged and designed for outdoor sports and adventures, perfect for all your shower and outdoor sports, hiking, camping or activities with friends and family. No need to worry about the environment. 4.THREE MODES OF PLAYBACK: Compatible with your phone, tablet, computer or any other bluetooth device, you can also connect the speakers to your device via the 3.5mm auxiliary port to output sound through the included auxiliary cable, supports memory card less than 32GB, sound files in mp3 or wav format. 5.4 HOURS LONG LASTING PLAYBACK: Bluetooth speaker built in 1500mAh rechargeable battery, one charge can last for one day, the maximum playback time can be up to 4 hours (depending on the volume level and sound content). specificationItem Type: Bluetooth Speaker_x000D_ Material: ABS, Nylon_x000D_ Battery: Polymer Lithium Ion Battery (Built In) Capacity: 1500 mAh_x000D_ Bluetooth Model: BD03_x000D_ Bluetooth Version: BT 5.0_x000D_ Speaker: Dual Speaker_x000D_ Output Power: 10W_x000D_ External Magnetic Speaker: 5W_x000D_ External Magnetic Speaker: 4 5W 50 Side 45 with Sub Magnetic_x000D_ Resolution: 90db_x000D_ Signal to Noise Ratio: 80db_x000D_ Playing Time: 4 Hours (Volume at 50%)_x000D_ Charging Time: 3H_x000D_ Interface: USB x 1, Micro USB x 1, 3.5mm Headphone Jack x 1, Memory Card Slot x 1 (Without Memory Card Maximum Support 32GB)_x000D_ Call Hands Free Function: Support_x000D_ FM: Support PackageList 1 x Bluetooth Speaker 1 x USB Cable 1 x Sound Cable 1 x Instruction Manual